Machine Drawing with AutoCAD

Cover
Preface
Acknowledgements
Contents
Chapter 1: Introduction
	History of Engineering Drawing
	Change in Drafting Environment
	Cad and Computer-Aided Drafting
Chapter 2: Orthographic Projection
	Perspective Projection
	Parallel Projection
	Orthogonal Projection
	Angles of Projections
		First Angle Projection
		Third Angle Projection
		Second and Fourth Angle Projection
	Drawing Layout
		First Angle Projection Method
		Third Angle Projection Method
		Layout Using Reference Arrows
		Indication of Method
	Drawing Convention of Orthographic Views-Hidden and Center Line
	Conversion of Pictorial Views into Orthographic Views
		Illustrative Problems
	Other Types of Projections
	Principles of Isometric Projection
	Oblique Projection
	Exercise
Chapter 3: Computer-aided Drafting Ackagesand Autocad
	Working Interface of AutoCAD
		Starting AutoCAD
		Understanding AutoCAD Interface
		Opening Existing Drawing
		Saving a Drawing and Exiting from AutoCAD
		Closing a Drawing and Exiting from AutoCAD
	Drawing Limits
	Creating 2-D Drawings in AutoCAD
		Concept of Coordinate in AutoCAD
	AutoCAD Commands
		Arc Command
		Ellipse Command
	Creating Text in AutoCAD
		Single Line Text
		Other Options
		Style Option
	Height of Text and Scale Factor
	Editing Single Line Text
	Editing Commands in AutoCAD
		Move
		Rotate
		Offset
		Array
		Mirror
	Clean-up Commands-Trim, Extend, Break, Fillet, Chamfer
		Trim
		Extend
		Break
		Fillet
		Chamfer
	Changing Object Properties from Command Line
	Scale
		Stretch
	Object Snap Mode
		How to Use the One-time Object Snap
	Display Control in AutoCAD
		Regen and Redraw
		Realtime Panning
		Realtime Zoom
		Zoom
		Zoom Dynamic
		Grid and Snap
		Setting a Reference Grid and Snap
		Isometric Option of Snap and Grid
	Layer
		Layer Properties Manager Dialog Box
	Creating an AutoCAD Drawing-Illustrative Example
	Exercise
Chapter 4: Dimensioning in Autocad
	General Concepts and Standard Practices
	Components of Dimensions Label
	Types of Dimensions
	Standard Practice in Dimensioning
	Types of Dimensioning
	Dimensions in AutoCAD
	Toolbar and Commands
		Linear Dimensions-Dimlinear
		Aligned Dimension Dimaligned
		Radius Dimension-Dimradius
		To Mark the Center of an Arc or Circle-Dim center
		Baseline and Continued Dimensions-Dimbaseline and Dimcontinue
		Ordinate Dimension-Dimordinate
		Adding Dimensions/Text with Leaders
		Creating Multiple Leaders
	Editing Dimensions in AutoCAD
	Illustrative Example of Dimensioning
	Exercise
Chapter 5: Section and Sectional views
	Cutting Plane Lines
	Full Section
	Half Section
	Special Section
	Local or Partial Section
	Removed Section
	Offset Section
	Omission of Section
	Hatching or Section Lines
	Sectional View and AutoCAD
		Bhatch Command in AutoCAD
	Illustrative Problems
		Example of Drawing Sectional View Using AutoCAD
	Exercise
Chapter 6: Thread and Fasteners
	Thread Terminology
	Thread Forms
	Metric Thread
	Other Thread Forms
	Thread Representation
	External Threads
	Internal Threads
	Designing Screw Thread in Drawing
	Threaded Fasteners
		Bolted Joint
		Nuts
		Drawing a Nut
		Other Types of Nuts
		Types of Bolts
		Creation of Bolt
		Other Forms of Bolts
	Locking Arrangement
		Lock Nut
		Split Pin
		Slotted Nut and Castle Nut
		Washer
		Set Screw
	Creating Blocks for Repetitive Usage in AutoCAD
		AutoCAD Library
	Creating Blocks from Individual Objects
		Base Points and Insertion Points
		Creating a Block by Saving a Block within the Current Drawing
		Inserting Blocks
		Saving Block as Separate Drawing Files
		Minsert Command
		Exploding Blocks
		Redefining Blocks
		Creation of Bolted Joint Using Block
	Creating a Symbol Library
	Exercise
Chapter 7: Keys, Cotter Joints, Pin Joints
	Key Joints
	Key
	Cotter Joint
	Example of Orthographic Projection Drawing Using AutoCAD
		Cotter Joint with Sleeve
	Exercise
Chapter 8: Paper Space and Model Space
	Viewports
		Tiled Viewport
		Creating Tiled Viewports in Model Space-An Example
		Floating Viewport
		Creation of Floating Viewport
	Model Space
	Paper Space
		Setting up Paper Space
		Scaling Views Relative to Paper Space
		Scaling Pattern Linetypes in Paper Space
		Example of Using Paper Space (Layout)
		Example Showing Use of Paper Space
	Exercise
Chapter 9: Solid Modelling
	Solid Primitives
	Construction and Display of 3-D Solid Primitives
		Sphere
	View Directions in AutoCAD-Viewpoint
		Vpoint Coordinate Input-Orthographic, Isometric, Dimetric and Trimetric View
		Standard Viewpoints
		Cone
		lsolines
		Cylinder
		Hide
		Torus
		Wedge
	Creating Extruded Solid
	Creating Revolved Solid
	Creating Composite Solids
		Union
		Subtract
		Intersect
		Interfere
	Creating Fillets and Rounds (Fillet)
	Chamfer
	Section (Creating a Cross-Section)
	Concept of Working Plane
		World Coordinate System (WCS)
		User Coordinate System (UCS)
		UCS Icon
	Creating a Solid Model of a Block with Steps
	Orthographic Projection Views
	Analysing Solids
	Advanced Editing Commands
		Mirror in 3-D (Mirror3D)
		Align (in 3-D)
		Rotating in 3-D (Rotate3D)
	Exercise
Chapter 10: pulleys
	C.l. Belt Pulleys
	Speed Cone or Stepped Pulleys
	Split Pulleys
	Rope Pulley
	V-belt Pulleys
	Making a Solid Model of a V-belt Pulley
	Exercise
Chapter 11: Shaft Coupling, Clutches
	Rigid Coupling
		Flange Coupling
		Protected Flange Coupling
	Flexible Coupling
		Pintype Flexible Coupling
		Oldham Flexible Coupling
	Universal Coupling or Hooke's Joint
	Clutches
		Positive Contact Clutches
		Gradual Engagement Clutches
	Exercise
Chapter 12: Pipe Joints
	Threaded Joint
	Flanged Joint
	Spigot and Socket Joint
	Expansion Joint
	Union Joint
	Pipe Drawings
	Pipe Fittings
	Types of Pipe Drawings
		Single line Drawings
		Double Line Drawings
	Dimensioning Pipe Drawings
	Pipe Drawings Using AutoCAD
	Pipe Drawing in 3-D
	Exercise
Chapter 13: Valves
	Cocks
	Flap Valve
	Stop Valve
	Feed Check Valve
	Safety Valve
		Dead Weight Safety Valve
		Lever Safety Valve
		Spring Loaded Safety Valve
	Exercise
Chapter 14: Gears
	Spur Gears
		Spur Gear Nomenclature
		Gear Tooth Profile
		Pressure Angle
		Involute Tooth Profile
		Base Circle
		Line of Action
		Construction of Involute Gear with AutoCAD
		Gear Pair in Mesh
		Effect of Change of Center Distance
		Development of Gear Pair in Solid Model
	Rack and Pinion
		Rack and Pinion in Solid Model
	Annular Gear and Pinion
	Bevel Gear
	Exercise
Chapter 15: Production Drawing
	AutoCAD and Production Drawing
		Geometric Tolerances
		Implementation of Geometric Tolerances
		Positioning of Feature Control Frame
		Datum Flags
	Dimensional Tolerances
		Selection of Tolerance
		Representation of Dimensional Tolerance in Drawing
		Implementation of Dimensional Tolerances in AutoCAD
	Fits
		Clearance Fit
		Interference Fit
		Transition Fit
		Hole Basis and Shaft Basis System
		Representation of Fits in Drawing
	General Tolerance for Linear and Angular Dimensions
	Surface Roughness
		Symbols Indicating Surface Texture in Technical Drawings
	Exercise
Chapter 16: Miscellaneous Machine Components
	Bearings
		Sliding Bearings
		Thrust Bearings
		Rolling Contact Bearings
		Selection of Bearings
		Mounting of Antifriction Bearings
	Engine Parts
		Stuffing Box
		Connecting Rod
		Eccentrics
	Internal Combustion Engine
		Piston
		Connecting Rod
	Toolhead of a Shaping Machine
	Tailstock of a Lathe
	Exercise
Appendix 1: Creating Text Style
	How to Create a New Text Style
	Renaming and Deleting a Text Style
	Changing a Text Style
	Making a Style Current
Appendix 2: Multiline Text
	Creating Multiline Text
		Entering Text in the Editor Box
		Creating Stacked Fractions Automatically
	Import Text
	Properties Tab
	Line Spacing
	Find/Replace Tab
Appendix 3: Color, Linetype and Line Weights
	Setting the Color, Linetype and Line Weight of an Object
	Controlling Color
	Changing Color of Object by Grips
	Controlling Linetypes
	Steps to Load a Linetype
	Setting the Linetype Scale (Ltscale)
	Controlling Lineweights
	Editing Objects by the Properties Window
Appendix 4: Ordinate Dimension
	Ordinate Dimension-Dimordinate
Appendix 5: Editing Dimensions
	Editing Dimensions in AutoCAD
	Editing Dimension Text—Dimtedit and Dimedit Commands
		Dimtedit
		Dimedit
	Using Grip to Edit Dimension
	Using Object Properties Window
	Modifying or Overriding the Dimension Style
	Controlling the Dimension Settings
Appendix 6: UCS Command
	W (World) Option
	New Option*
	Origin Option
	ZA (ZAxis) Option
	3Point Option
	0B (OBject) Option
	Face Option
	V (View) Option
	X/Y/Z Options
	S (Save) Option
	D (Delete) Option
	Apply Option
Index